Improvement in horse-power



iuted gime @wat @Mina C. L. MERRILL, OF WATERTOVVN, .NEW YORK.

Letters Patent No. 89,678, dated May 4;, 18.69. i

IMPROVEMENT IN HORSE-POWER.

The Schedule referred to in these Letters Patent and mang part of thesame.

To all 'it ma/y concern:

Be it known that 1,0. L.l MERRiLL, of Watertown, J eiiferson county, NewYork, have invented a new and improved Horse-Power; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable others skilled in the art to make and use thesame, reference'being had tothe accompanying drawings, forming part ofthis specification, in which- Figure 1 represents a side elevation of myimproved horse-power.

Figure 2 is a detail plan or top view, partly in section, of the same.

. Figure 3 is a detail horizontal section, on an enlarged scale, of thesame.

Figure 4 is a detail vertical transverse section of the same, the planeof section being indicated by the line :c sc, iig. 3.

Similar letters of reference indicate corresponding parts.

This invention relates to a new machinery for regulating and equalzinghorse-power, applied to wellboring or other apparatus, and has for itsobject to overcome the sudden changes in the friction occasioned in suchmachines, when alternately the strain is taken off and put on, by thealternate dropping and raising of the boring-tool.

The invention consists chiefly in the application of anadjustablefriction-bed, which is brought in indirect contact with theoperating-lever whenever the strain is removed from the latter, by thedropping of the tool. l

The invention consists, also, in the application to the horse-power, ofan independent windlass, bywhich the tool can be hauled up when desired.

A, in the drawing, represents the lever, to which 'the horse is to beattached.

Y This lever is secured to a vertical shaft, B, which has its bearingsin a frame, O, that is firmly secured to the ground.

l A toothed wheel, a, on the shaft B, meshes into a pinion, b, onanother vertical shaft, D, as shown.

The shaft D carries two or more projecting arms E E, of equal length,and each provided with a frictionroller, c, at its end.

The tool F,.to be raised and lowered, is suspended from a rope or chain,G, which passes over .a pulley, d, of a iixed frame, H, and which issecured to a lever, I,l that is pivoted to the frame H.

Another chain or rope, c, fastened to the lever I, and passing over apulley, f, underneath, is secured to a lever, J, which is, by a verticalpin, n, pivoted in a stationary box, K.

The end of the lever J is within reach ofthe arms E.

As the lever is, by the horse, revolved in the direction of the arrowl,` the shaft D is turned in the op posite directiomand the arms Etherefore, in striking the lever J, push it in the direction of thearrow 2,

The lever, by such motion, pulls the rope c, and draws the lever I down,thereby also pulling the rope G, and elevating the tool F.

As soon, howeveras the arm E, which acted on the lever J, has passed thesame, the weight of the tool will pull the chain Gr down again, and willthereby pull the lever J into position for a new stroke of the nekt armE.

Thus, as the shaft D continues to be revolved, will reciprocating motionbe imparted to the tool, as many strokes, during each revolution of D,as there :are arms E.

While the tool,is held suspended, during the elevatingprocess, the fullstrain is on the horse, and this strain is suddenly removed when thetool fails.

To overcome the sudden changes thus produced, I have airanged ahorizontal spring-plate, L, which is, by means of rubber or othersprings, g, forced towards the shaft D, and which has a concave inneredge, nearly, or quite concentric with a circle described around D.

The roller c, of one arm E, comes1 in contact with the edge of the plateL, as soon as the other arm is released by the falling tool, and thefriction oi the spring g against the arm, is then sufficient to exertsome resistance, which will make the change of weight or strain lessperceptible.

As soon as one arm E comes in contact again with the lever J, the actionof the spring-bed L ceases, as the length of 4 its curved edge is justsufiicient to work on the arm while the tool is not .held suspended.

. In order to prevent the sliding bed om moving. unevenly, I have placedits downward-bent grooved edges h h over the ends of a iixed plate, M,and have arranged keys t t in the grooves, as in figs. 3 vand 4, sothat, by means of set-screws j, the friction, at the ends, may beregulated.

There are also pins l l fitted, with their enlarged heads m, intocylindrical or prismatic cavities of the platev L, said pins beingsecured in a xed plate, o, as shown in iig. 3.

The plate L will thus, by the springs g, be always moved evenly andaccurately, and will exert an evenv pressure on the arms E.

On the frame H is arranged a windlass, N,.which can be worked by hand,and whichcan be used to withdraw the pumping-rod gradually from thewell.

In that case, the rope G' is disengaged from thel tool, and the rope oof the windlass attached to the same.

The windlass is provided with ratchet and pawl, to prevent itsunwinding.

Having thus described my invention,

What I claim as new, and desire to` secure by Letters Patent, is-

1. The arrangement of the sliding springebed L with the rotating arms E,for the purpose of producing on the machine a strain, when there is notany, substantiallyr as herein shown and described.

2. The combination of the arms E E, on the rotatin g shaft D, said armshaving the friction-rollers c, with the lever J, chain e, lever I, andchain Gr, all arranged and operating substantially as herein shown anddescribed.

3. The plate L, provided with the grooved edges h, when fitted over theends of the xed bed M, and over the adjustable keys i i, substantiallyas herein shown and described.

4. The fixed guide-pins l, working, with their enlarged heads m, in theplate L, substantially as described, in combination with the springs g,to operate as specified.

5. The Windlass N, having the rope O, when arranged and operatingsubstantially as specified.

o. L. MERRILL.

Witnesses:

FRANK BLOCKLEY, ALEX. F. ROBERTS.

